Microsoft Windows User Profile Service Directory Junction Privilege Escalation Vulnerability

This vulnerability allows local attackers to escalate privileges on affected installations of Microsoft Windows. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the User Profile Service. By creating a directory junction, an attacker can abuse the service to create a second junction in a sensitive location. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM.